Fireproof padding



Patented Feb. 4, 1930 'WILLIAM I. WEAVER, OF CAMDEN, NEW JERSEYFIREYBOOF PADDING No Drawing.

In flat work ironers, press machines and similar machines, where heat isapplied through a drum, screen or other apparatus, it is essential anddesirableto have the same covered with a sheet of padding or textile.fabric, and it is essential not only that such padding or fabric shouldpossess certain characteristics so that the inner plies of the fabric belooselybound so as to forma spongy core, while the outside plies must bemore firmly bound, but it is also'essential that the said padding orfabric, Where the sameis placed next to such drum, screen or machine,shall be heat resisting. Otherwise, the fabric, where it touches thatportion of such machine which is so heated, will become cooked, hardenedor carbonized. The life of the fabric is much shortened by thiscarbonization. In order to avoid the cook- 2 ing, hardening orcarbonization and thus lengthen the life and use of any such fabric andstill keep the fabric porous, I have invented a mixture or solutionwhich is heat resisting. At the same time, the fabric must be keptflexible. In other words,it must have flexibility so that it will notcrack or break when rolled or creased. It is also necessary that theheat resisting material be so applied that it shall not penetrate to theother side of the padding and yet it must also adhere to the side nextto the heat, and so adhere in such a manner as not to be easily removedor easily rubbed off, while the machine is in motion, said solution alsomust be of such a nature as when applied to the fabric on the one sidethat it will not sealor close up the pores'on that side so as to prevententirely the heat from the 'ironer or machine passing through thefabric. Otherwise, the whole 40 purpose of the solution and theusefulness of -the fabric on flat work iro'ners and Pressmachines wouldbe gone. The solution is in.- tended to make the fabric, on the sidewhere it is applied, heat resisting, so that the life of the fabric maybe prolonged, but it is essential that the heat from the ironer ormachine shall pass through the fabric to the other side so as to absorbthe moisture on such other side when such lroner or machine is in use.The fabrlc, therefore, after said solution is ap- App1ieation filedOctober 11, 1929. Serial No. 399,099.

plied on the one side, must still remain porous.

The paddingpr fabric to which my mixture is to be applied is mostcommonly used in laundries and other places where linens, cloths andother clothing materials are cleaned, pressed or manufactured. It is,therefore, also essential that the solution which shall be applied tothe padding, shall be in its nature,

cleanly and not easily removed. My -solution, therefore, must have inparticular, four qualifications-flexibility, heat resistance, the heatresisting material must have an adhesive quality and at the sametime thesolu-- tion must have'fluidity so as to be easily applied by spraying orotherwise. The mineral matter must be non-igniting and of such a natureso as not to seal or close up that side of the fabric where applied. Inother words the fabric must remain porous. To the above ends myinvention consists of a novel composition of matter composed ofglycerine, a good adhesive and a suitable powdered fire proof orheatresisting nonigniting mineral material, the ingredients being preferablycommingled in the manner hereinafter described with theadditionofsufficient water so as to make the solution fluid and thuseasily applied.

It further consists of a nov"l porous fabric I or padding which isimpregnated on one side with the foregoing solution in any suitablemanner, preferably in the form of a spray propelled against andinto thevfabric by a suitable pneumatic means such as an air gun or the like. g

It further consists in the novel porous padding or fabric conformingsubstantially to the disclosure in the Weaver Patent No. 1,471,224heretofore granted to me, wherein is disclosed a novel padding fabrichaving interwoven superimposed plies composed of relatively small spacedhard twisted warps and relatively largespaced soft sliver-likeinterwoven wefts forming an internal yield- 'ing spongy mass, saidfabric in accordance with my present invention being impregnated on oneside with my novel composition of matter aforesaid. 7

' My novel mixture is composed'of the following ingredients which arecombined, heated and boiled together in substantially the followingproportions:

at Glycerine,-about 2 per cent.

6 Glue sizing, gum shellac, paste or some other similar adhesive, about16 per cent.

(0) Asbestos, whiting, po dered calcium, lime,-chalk or other nonigniing mineral substance, about 28 per cent.

(03) Water, about 53 per cent.

The glycerine in the" mixture or solution gives to the paddingor fabric,when applied, flexibility or pliability .and so prevents it fromcracking or breaking when rolled or bent. The asbestos, whiting,powdered cal cium, lime, chalk or other nonigniting mineral matter inthe mixture, when applied, makes. the fabric fire proof or heatresisting and the glue sizing, gum shellac, paste or other suitableadhesive, makes the mixture stick or adhere to the fabric. The watermakes the solution fluid so that it can be easily applied by spraying orotherwise. The mineral matter must be nonigniting and of such a natureso as not to seal or close up that side of the fabric where applied. Allthese four qualities are primarily necessary. The novel feature in themixture is in the combination of these four qualities.

It must be understood that the several materials in the combination ofwhich my invention consists can be variously arrangedand organized andthat my invention isnot limited to the precise materials or proportionsabove named.

No mixture or solution in the trade has heretofore been invented or usedin laundries, tailor shops or similar places where flat work ironers,press machines or similar machines are in use, which will make thefabric, padding or other material to which it is applied fire proof orheat resisting on the underside thereof and at the same time keep itporous on that side and soft or spongy on the upper side and yetflexible on both sides. As a matter of fact, no mixture or solution hasever en invented or used in any way similar to the mixture or solutionabove named, invented by me for the purposes aforesaid.

I am aware that it has heretofore been proposed in the German patent toVon Asten No.

275,020, June 4, 1914-, to provide a facing of asbestos which isinterwoven in the padding or the fabric, but my invention differs therefrom in the employment of the additionalingredients of glycerine, waterand an adhesive, which in combination with the powdered fire proofmaterial is sprayed upon or into the fabric on the under side. Thisspraying is so done under my inventiomat a very material reduction incost than if the fire proof mate rial were interwoven into the fabric.

My novel composition .o f ma'tter will be fqund to be effective when itis sprayed upon or into any padding-fabric or textile material havingthe general characteristics above described, but I have found it to beespecially useful when sprayed "upon 6r into a textile fabric or paddinghaving a soft spongy interior and a relatively close tightly wovenexterior as described in my patent aforesaid.

I am aware that slight changes in the above named mixture or solutionmay be made by those skilled in the art, since it is evident that othermaterials than those particularly enumerated may be used to form amixture which, when applied to the padding or textile fabric to be usedon flat work ironers, press machines or other machines, shall havethefour particular qualifications above named, viz; flexibility,adherence, fluidity and heat resistance and still remain porous on theside where the solution is applied.

My novel invention consists not simply in having certain materials, as Ihave above named, formed into a combination resultingv ficient heat maypass through to the other side. r

It will be apparent that for certain types of padding it is desirablethat my novel solution or composition of matter be sprayed on or appliedto only one side of the padding or other textile fabric. uations whereinit may be desirable to spray my novel solution or composition of matter,on both sides of such padding or fabric or to impregnate the body ofthe same as wellv as both sides thereof with said solution and Itherefore desire it understood that my invention in its broad aspectscomprehends not only my novel solution or composition of miatter, butsaid solution when sprayed or applied to one'or both sides of saidpadding or fabric or 'to the body of the same, which padding or fabricmay be of any character having suflicient body or texture to enable itto be used under the conditions stated or said padding or fabric mayhave a soft spongy interior and a relatively more tightly woven exteriorsurface or surfaces substantially as in my patent aforesaid. I am awarethat the invention may be embodied in other specific forms withoutdebodiment to be considered, in all respects as illustrative and notrestrictive, reference being had to the appended claims rather than toparting from the spirit or essential attributes thereof, and I thereforedesire the present emthe fo're oing description to indicate the scope oft e invention.

Having thus described my invention, what Iclaim' is new and desire tosecure by Letters fabric being impre Patent, is 2- i 1. 7 A new articleof manufacture adapted for use on flatwork ironers, press machines andothersimilar ironing and pressing machines consisting of a porousflexible fabric, one side only of which fabric having applied thereto asolution consisting of glycerine, water, an adhesive and a powdered,heat'resisting, nom'gniting, mineral material.

2. A new article of manufacture adapted for use on flatwork ironers,press machines and other similar ironing and pressing machines,consisting of a porous flexible padding or textile fabric having a softspongy interior and exterior plies of relatively closely interwovenwarpsand wefts, said padding or with a solution conslsting of glycerine,water, an adhesive, and a powdered heat resisting, nonigniting mineralmaterial. v

3. A new article ofmanufacture adapted for use on flatwork ironers,press machines and other similar ironing and pressing ma-' chinesconsisting of a porous flexible textile fabric havin a soft spongyinterior, one s1de only of whic fabric having applied thereto a-nlutionconsisting of glycerine, water, an adhesive and a powdered, heatresistlng, nonigniting, mineral material.

WILLIAM I. WEAVER.

ated on one side only

